#ifndef AXIS
#define AXIS
enum Axis
{
	X = 0,
	Y = 1,
	Z = 2
};
#endif

#ifndef CONSTRAINT_TYPE
#define CONSTRAINT_TYPE
enum ConstraintType
{
	GEOMETRIC = 0,
	TIME = 1,
};
#endif

#ifndef FORCE_GENERATOR_TYPE
#define FORCE_GENERATOR_TYPE
enum ForceGeneratorType
{
	GRAVITY = 0,
	DRAG = 1,
	FRICTION = 2,
	SPRING = 3
};
#endif